I dunno if this counts as a fan mode, but you can use Lego pieces

Review: 42144-1 - Material Handler

Where can I find the dimensions of all LEGO parts? - Quora

Celebrating International LEGO Day With Our Best LEGO Store Stories - BrickNerd - All things LEGO and the LEGO fan community

REVIEW: 70813 Rescue Reinforcements - Special LEGO Themes - Eurobricks Forums

▻ Launch of Pick and Build on the LEGO Shop: the Bricks & Pieces service will disappear permanently in February - HOTH BRICKS

lego doesn't want you to know that these pieces exist

I dunno if this counts as a fan mode, but you can use Lego pieces

LEGO IDEAS - Blog - 10K Club Interview: FANTOZZI TAKES THE BUS ON THE FLY by Nastronauta

LEGO 79104 The Shellraiser Street Chase review

Donkey Kong sets officially announced!

Review: LEGO Minifigures Series 25 - Jay's Brick Blog